package com.itheima.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.dto.DishDto;
import com.itheima.entity.Dish;
import com.itheima.entity.DishFlavor;
import com.itheima.mapper.DishMapper;
import com.itheima.service.DishFloverService;
import com.itheima.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.stream.Collectors;

@Service
@Slf4j
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish>implements DishService {

    @Autowired
    private DishFloverService dishFloverService;
    /*

     *新增菜品，同时保留口味数据
     * */
    @Transactional
    public void saveWithFlavor(DishDto dishDto){
        //保存菜品的基本信息到菜品表dish
        this.save(dishDto);
        Long dishId = dishDto.getId();
        //菜品口味
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors=  flavors.stream().map((item)->{
            item.setDishId(dishId);
            return item;
        }).collect(Collectors.toList());
        //保存菜品口味到菜品口味表
        dishFloverService.saveBatch(flavors);
    }

    /*
    * 根据id来查询菜品信息和对象的口味信息
    *
    * */
      @Override
      public DishDto getByIdWithFlover(Long id){
       //查询菜品基本信息dish表查询
          Dish dish = this.getById(id);

          DishDto dishDto = new DishDto();
          BeanUtils.copyProperties(dish,dishDto);
          //查询口味信息
          LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
          queryWrapper.eq(DishFlavor::getDishId,dish.getId());
          List<DishFlavor> flavors = dishFloverService.list(queryWrapper);
         dishDto.setFlavors(flavors);
          return dishDto;
      }

      /*
      * 跟新菜品信息和口味信息
      * */
      @Override
      @Transactional
      public void updateWithFlavor(DishDto dishDto){
       //更新dish表
          LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper();
       queryWrapper.eq(DishFlavor::getDishId,dishDto.getId());
          this.updateById(dishDto);
        //清理菜品表对应的口味数据
     dishFloverService.remove(queryWrapper);
        //添加当前提交过来的口味数据
          List<DishFlavor> flavors = dishDto.getFlavors();
          flavors=  flavors.stream().map((item)->{
              item.setDishId(dishDto.getId());
              return item;
          }).collect(Collectors.toList());
          dishFloverService.saveBatch(flavors);
      }
}
